How it works

The Nexus 2000/3000 System

The Nexus 2000 and Nexus 3000 are the same system in 2 sizes for different pond volumes (see table below).

The Nexus 3000 is a Nexus 300 body with an Answer 410 and the 2000 is a Nexus 200 body with an Answer 325. The system you will need depends on your pond, desired flow rates etc. The Answer sits in the central chamber of the Nexus and prevents all solids over 200 microns from entering the biological stage.

The Answer is robustly engineered out of stainless steel and a proven technology within the industry. The pump that provides the power and cleaning action, draws filtered water from inside the Answer. It is then pumped into a hollow rotor arm. At each end of the arm are nozzles angled at 45 degrees. Water pumped through these nozzles cause the arm to rotate. Water is forced out at high pressure against the inside of the screen continuously. This causes the water to backwash through the screen to the outside.

The result is that particles lodged on the outside, which are naturally trying to get through, are forced away and eventually settle at the bottom of the Nexus central chamber. Here they can be sumped to waste. The main benefit of the Answer is that it will run continuously without blocking, protecting the bio-stage.

The water after being cleaned in this central stage, enters the biological stage, which consists of the Kaldnes Moving Bed™ Process. Kaldnes has been proven to be many times more efficient than static media. Incorporating the K1 media and the Kaldnes Moving Bed™ Process into the product range was a major breakthrough in the industry due to what can be achieved.

It is by using this process that we have been able to achieve a smaller footprint. Kaldnes Moving Bed™ Process, exclusive to Evolution Aqua is included within the Nexus. An air ring at the base 1 of the outer bio chamber releases air constantly agitating the media which provides the best possible environment for the bacteria to colonise. This in turn will create the optimum healthy environment for your fish. Kaldnes bio- media is maintenance free allowing the biomass to fully mature, which maximises its effectiveness and creates constant parameters.